From 4a4221b78b8a64b29d0a4a82533ff09cfc6bce2e Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Mon, 13 Apr 2015 17:18:07 -0400
Subject: [PATCH] Make sure that unknown characters in an mrow force the mrow
 to be measured.  Resolves issue #1163.

---
 unpacked/jax/output/HTML-CSS/jax.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/unpacked/jax/output/HTML-CSS/jax.js b/unpacked/jax/output/HTML-CSS/jax.js
index 7e3f7dac2..90e1242b9 100644
--- a/unpacked/jax/output/HTML-CSS/jax.js
+++ b/unpacked/jax/output/HTML-CSS/jax.js
@@ -1804,7 +1804,7 @@
 	if (bbox.width) {BBOX.width = bbox.width; BBOX.minWidth = bbox.minWidth}
         if (bbox.tw) {BBOX.tw = bbox.tw}
         if (bbox.ic) {BBOX.ic = bbox.ic} else {delete BBOX.ic}
-        if (BBOX.exactW && !bbox.exactW) {delete BBOX.exactW}
+        if (BBOX.exactW && !bbox.exactW) {BBOX.exactW = bbox.exactW}
       },
       HTMLemptyBBox: function (BBOX) {
 	BBOX.h = BBOX.d = BBOX.H = BBOX.D = BBOX.rw = -HTMLCSS.BIGDIMEN;